Veterinary operating-table.



W. GROSSLJEY. VETERINARY OPERATING TABLE. APPLICATION FILED SEPT.1,1908. 935,965 Patented Oct. 5, 1909.

a sHBBTs- SHBET 1.

vwenfoz gewge gbcwnti NEW, 5. mum c0, vuomumoclummg. wmmmon. D. c.

W. GROSSLEY. VETERINARY OPERATING TABLE. APPLICATION FILED SEPT. 1,190a.

' 935,965. Patented 0015.5,1909. 3 SHEETS-SHEET 2. Ti 3- Q I F auvenl'ozo juvge SEQ gBcmnts ANDREW. B. GRAHAM e0 Pnnmumoempuins. WASHINGTON. D.(1

W. GROSSLEY. VETERINARY OPERATING TABLE. APPLIOATIONYFILBD SEPT. 1,190a.

Patented Oct. 5, 1909.

3 SHEETS-SHEET 3.

attomug WILLIAM CROSSLEY, OF WEST HAVEN, CONNECTICUT.

VETERINARY OPERATING-TABLE.

Specification of Letters Patent.

Patented Oct. 5, 1909.

Application filed September 1, 1908. Serial No. 451,277.

To all whom it may concern:

Be it known that I, VVILLIAM CROSSLEY, a citizen of the United States,and resident of West Haven, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements inVeterinary Operating-Tables, of which the following is a full, clear,and exact specifica- 'tion.

My invention relates to an improved veterinarys operating table, and ithas for its object to provide simple mechanism of great stability andrigidity adapted to easily and expeditiously handle, support andsecurely hold the powerful animals which the veterinary surgeon iscalled to treat or operate upon.

To this end the invention consists in the novel combination,construction and arrangement of parts as hereinafter more fullydescribed and claimed.

In the accompanying drawings forming a part of the specification, Figure1 is an end elevation of my improved operating table, and Fig. 2 is aside elevation or front view. Fig. 3 is a plan View. Fig. i is atransverse section through the turning structure and its controllingmechanism, taken on the plane 4: 4 of Fig. 2, showing one of theskeleton end disks in axial elevation. Fig. 5 shows a part of one of theskeleton disk frames of the turning structure, with its guiding track invertical section in the plane of the track, or line 5, 5, of Fig. 2.Fig. 6 is a section of the same on a line transverse to the plane of thetrack or line 5, 5 of Fig. 2.

Referring to the drawings, the stationary frame or table supportingstructure of my improved operating table embodies as its principalfeature the pair of circular tracks or rails A set in vertical planesparallel with each other, here shown to be bent up or formed of channeliron having the flanges projecting inwardly. On the outer faces of saidrails at their lower sides are riveted the plate strips 6 and the angleiron strips f at the outer face and lower edge of the plate strips andhaving their horizontal flanges extending inwardly, said angle iron andplate strips together comprising sills of somewhat greater length thanthe diameter of the circular tracks. To the upper parts of the tracksare similarly riveted the shorter plate and angle iron strips 6 F. Tothese members on the outer faces thereof are riveted the upright centralstanchions g of angle iron and the diagonal stanchions h of similarstock, together forming the strong A frame construction shown.Horizontal cross bars 5 are riveted to the circular tracks and saidstanchions, and at the point where the diagonal stanchions intersectwith the upper horizontal cross bars, the ends of brace strips 7c areriveted, and inclined outwardly from the base of the structure, beingsecured to the sills at their lower ends by horizontal ties Z. At theirupper ends the stanchions g, h, project above the circular tracks andare riveted to angle iron pieces m which are further supported by legs mriveted thereto and to the angle irons The two sections of the frame areconnected at the top by the diagonal connecting bars m m riveted to theangle irons f and the central gusset plate m and at the bottom by thefront bar m and diagonal bars m.

Fitted to revolve in the circular tracks A are skeleton disk framescomprising the radial arms 2' riveted to the central disk plates (Z andconnected near their outer ends by the angle iron stays a. Each armcarries a pair of antifriction rollers e at its end supported on theends of a pivot pin f passed through the arm. Said rollers are fitted inand track upon the circular tracks A, as shown in detail in Figs. 5 and6. Plates n are riveted to the arms on the inner side of the frames, andconnected by the plates 71?, to which are attached the I beams nextending from one disk frame to the other somewhat to one side of theiraxis and connecting them to these beams are bolted the planking n nwhich comprise the operating table proper, and to which an animal may besecured, with its center of gravity nearly coincident with the axis ofthe mechanism, and therefore nearly balanced thereon.

The skeleton disk frames are further connected by an I beam R attachedto the end portion of one of the arms ?1 of each frame by a strap plater by means of which the beam is supported clear thereof, exterior to thecircumference of the tracks, in the vertical axial plane from which theplanking n n is offset and which it is parallel with. Journaled inbearings n on said I beam is a screw r having the grooved pulley r atthe end which is over the end of the beam and from said pulley a cableor belt 1- connected with a similar pulley r at the center of theskeleton disk, having its arbor r journaled in the disk plate d andprovided with a crank r by which it may be turned. A head r is mountedon the screw 7" and arranged to slide on the upper flange of the I beamoperated longitudinally thereof by the screw when turned by the crank W,belt 7 and pulleys 7' and 1'. To said head are attached cables t whichpass over sheaves t mounted on the I beam and under the sheaves tmounted on a frame 25 hung beneath the I beam, and are attached at theirends to the I beam. These parts provide hoisting mechanism whereby ananimal standing beneath it may be slung from the ground by the operationof the crank 1 sliding the head 1 and thus drawing in, or letting outthe cables 6 and correspondingly raising or lowering the frame 23 whichis provided with eyes if for attachment of'the strips by which theanimal is supported.

At the rear of the machine, or side toward which the operating table isoffset from the axial plane, a Windlass is mounted compris ing the shaftt mounted in bearings on suitable frame work i on the supportingstructure, the drums t secured on the shaft in the plane of the tracksA, the gears 25 on the ends of the shaft, the pinions t intermeshed withsaid gears and mounted on a shaft a beneath the gears, and a crank 26for turning the pinion shaft. Each of the drums t has a double groovefor the reception of oppositely wound cables 16 which extend in oppositedirections around the skeleton disk frame for acertain distance, passingthrough slots a in the tracks A and between the pair of rollers on eacharm as shown in Figs. 5 and 6, and having their ends fastened to thearms as shown in Fig. 4-. By means of this mechanism the operating tablemay be turned from the vertical position shown in the figures to anyrequired angle therewith up to the horizontal position, or through theentire circle if the cables are carried all the way around the skeletondisks. An arc of motion of ninety degrees for turning an animal from theerect to horizontal positions is ordinarily suflicient. The structure isexceedingly stable and unyielding on account of the great distance ofthe supporting points of the table from its center of motion, and therigidity of the frame.

I claim as my invention:

1. An operating table for veterinary use comprising circular supportingtracks and head frames guided on the supporting tracks and carrying anoperating table.

2. I11 veterinary operating tables the combination of a supportingstructure comprising a pair of vertical circular tracks or rails havingA shaped frames built thereon, and connected in a unitary structure,movable head frames guided or tracking upon said rails and connected ina unitary structure, and an operating table mounted thereon.

3. In veterinary operating tables the combination of a support-ingstructure comprising circular tracks or rails, movable head framesguided or tracking upon the rails, a connecting structure joining thehead frames near their axial part and carrying an operating table offsetfrom the axial plane, a connecting member mounted upon the head framesnear their periphery, in the central plane from which the table isoffset and hoisting mechanism supported upon said connecting member forslinging an animal to the table.

t. In veterinary operating tables the combination of a supportingstructure comprising circular tracks or rails, movable head framesguided or tracking upon the rails, a connecting structure joining thehead frames in a unitary structure in a plane offset from their axis andcarrying an operating table, hoisting mechanism mounted upon the headframes, means for operating the hoisting mechanism from the axial centerof the head frames, and means for rotating the movable unitary structurein its supporting frame.

5. In veterinary operating tables the combination of a supportingstructure comprising a pair of vertical circular tracks or rails joinedin a unitary structure, head frames movably guided upon said rails andprovided with rollers for tracking thereon, said head frames beingconnected in a unitary structure and carrying an operating table.

6. In veterinary operating tables the combination of a pair of verticalcircular tracks or rails having A shaped frames built there on, amovable structure guided and supported upon said frames and providedwith rollers bearing and tracking thereon, an operating table carried onsaid movable structure, hoisting means carried by the movable structure,and means for rotating the movable structure in its support.

7 In veterinary operating tables, the combination of a bed frame and acircular track erected upon the frame, a rotatable head guided'on thetrack, an operating table carried and supported by the head at one endand means for revolubly supporting the other end of the table upon thebed frame.

8. In veterinary operating tables, the combination of a bed frame, acircular track erected thereon, and braced by an A frame work connectingthe circular track and bed frame, a rotatable head guided to revolvewithin the circular track, an operating table carried and supported bythe head at one end, and means for revolubly supporting the other end ofthe table upon the bed frame.

9. In veterinary operating table construc tion the combination of thecircular tracks of channel iron and supporting frames, the movableunitary structure of framed construction with rollers carried upon itsarms and tracking in said channel track, an operating table mounted onsaid movable structure, a Windlass and cable connection for rotating themovable structure, and hoisting sling mechanism carried by the movablestructure, substantially as and for the purpose specified.

10. In Veterinary operating tables the combination of a pair of verticalcircular tracks or rails connected in a unitary structure, a pair ofskeleton frames supported by said tracks and provided With rollerbearings tracking thereon, parts connecting said frames in a unitarystructure, an operating table carried on said connecting parts, anoverhanging part connecting the frames above the table, hoisting meanscarried upon said overhanging part, means for operating the hoistingmeans from the axial center of the movable structure, and means forrotating the movable structure in its supporting track.

11. In veterinary operating tables the com bination of a pair ofvertical circular tracks or rails connected in a unitary structure, apair of skeleton frames supported by said tracks and provided withroller bearings tracking thereon, parts connecting said frames inunitary structure, an operating table carried on said connecting parts,an overhanging part connecting the frames above the table, hoistingmeans carried upon said overhanging part, means for operating thehoisting means from the axial center of the movable structure, aWindlass, and cable connections extending oppositely therefrom andsecured to the periphery of the skeleton frames, for turning the movablestructure in its supporting frame or track, sublstantially as and forthe purpose specifiec.

Signed by me at New Haven, Connecticut this th day of August 1908.

WILLIAM CROSSLEY. Witnesses:

GEORGE L. BARNES, GERTRUDE R. FARRELL.

